Patents by Inventor Jorg Hax

Jorg Hax has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High molecular weight water-soluble polymers useful in deoiling sand and rock masses
    Patent number: 4521579
    Abstract: Sand or rock masses containing mineral oil are deoiled with a deoiling agent containing an aqueous solution of a water-soluble copolymer which is a random distribution of 5 to 60% of weight of units of the formula ##STR1## 2 to 40% by weight of units of the formula ##STR2## 38 to 93% by weight of units of the formula ##STR3## and partial hydrolysates thereof, wherein when R.sup.1 is hydrogen, R.sup.2 is hydrogen, methyl or ethyl, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- or a direct bond, and X.sup..sym. is a cation; when R.sup.1 and R.sup.2 are identical or different, each is hydrogen, methyl, ethyl or, together are trimethylene, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- and X.sup..sym. is a cation.
    Type: Grant
    Filed: March 29, 1983
    Date of Patent: June 4, 1985
    Assignee: Cassella Aktiengesellschaft
    Inventors: Friedrich Engelhardt, Hermann Schmitz, Walter Gulden, Jorg Hax
  • Agent and method for deoiling sand and rock masses
    Patent number: 4451631
    Abstract: Sand or rock masses containing mineral oil are deoiled with a deoiling agent containing an aqueous solution of a water-soluble copolymer which is a random distribution of 5 to 60% of weight of units of the formula ##STR1## 2 to 40% by weight of units of the formula ##STR2## and 38 to 93% by weight of units of the formula ##STR3## and partial hydrolysates thereof, wherein when R.sup.1 is hydrogen, R.sup.2 is hydrogen, methyl or ethyl, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- or a direct bond, and X.sup..sym. is a cation; when R.sup.1 and R.sup.2 are identical or different, each is hydrogen, methyl, ethyl or, together are trimethylene, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- and X.sup..sym. is cation.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: May 29, 1984
    Assignee: Cassella Aktiengesellschaft
    Inventors: Friedrich Engelhardt, Hermann Schmitz, Walter Gulden, Jorg Hax